Optical glass is with high purity silicon, boron and sodium, potassium, zinc, lead, magnesium, calcium, barium oxide according to a particular formula mixed, melted in a platinum crucible temperature, ultrasonic stir, to bubble, followed by a long slow cooling, in order to avoid glass block produce internal stress. After the cooling of the glass block, must be measured by optical instruments, test purity, transparency, uniformity, refractive index and dispersion rate is close to the specification.

To produce high quality optical glass must be cold processing, polishing, cleaning and so on, and finally to get high-quality optical glass lenses. Here we mainly talk about the cleaning process of optical glass.

So what are the factors that affect the cleaning of optical glass? Look at the following specific:

A, the key technology of cleaning process: optical glass after cleaning can reach the surface without leaving any oil, stains, the surface is smooth, the water film intact!

B, factors affecting the quality of optical glass after cleaning and the corresponding solutions:

(1) of the glass quality spiral sending feeder and polluted, mainly for surface moldy, bubble, scratches, etc., in the mechanical processing, such as: grinding, smear test, measurement of stress, man-made pollution situation is not a;

(2) the selection of cleaning agent to its dynamic and temperature, water quality, we use non ODS aqueous alkaline cleaning agent, mainly by water, alkali, surfactant, anti rust material composition, chemical formula C3H8, with side chains of cyclic olefin, with strong oil soluble ability; features: low toxic, non flammable, cleaning and low cost characteristics;

(3) solution concentration directly affect the cleaning degree of the size; usually cleaning solution pH value of general between 8.5-12. If the pH value is greater than the box type transformer station 10, the side of surfactant to weaken. When the pH value is greater than 12, side cleanliness decline.

(4) solution temperature and soaking time also with the high temperature circulating fan like effect the decontamination efficiency; when the temperature rises, the reaction velocity of the solution are also rising, viscosity decrease of pollutants for pollutants from, but the solution stability decreased. If the temperature is too high, it will produce a pattern on the edge of the glass.

(5) in the cleaning process, attention must be paid to the use of pure water or deionized water, if the use of side water hard water is very difficult to remove grease from one glass and water contain of Ca, Na + impurity will form a layer of white mist film on the glass surface after drying, pollution of glass;

(6) optical glass after cleaning, rinsing is required. After rinsing the cleanliness, except with the cleaner rinsing and cleaning liquid in the cleaning agent concentration, and how much of a rinsing step, size of rinsing water supply, temperature and cycling use of water is clean.

(7) the degree of cleanliness of the cleaning environment;

(8) after cleaning and drying process and temperature should be as far as possible to ensure that the vertical glass, the glass ceramic packing column, avoid the drying of glass along the watermark; oven temperature control at about 70 degrees, the time in about 20 minutes. If the temperature is too high, it will produce a pattern on the edge of the glass.